Subtract 40/7 from 72/30
1st number: 2 12/30, 2nd number: 5 5/7
72/30 - 40/7 is -116/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
72/30 = 72 × 7/30 × 7 = 504/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
40/7 = 40 × 30/7 × 30 = 1200/210 - Subtract the two like fractions:
504/210 - 1200/210 = 504 - 1200/210 = -696/210 - After reducing the fraction, the answer is -116/35
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